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    {,hJ>                     @   s*   d dl mZ d dlmZ G dd dZdS )    )ProgrammingError)cached_propertyc                   @   s  e Zd ZdZdZdZdZdZg ZdZ	dZ
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connection)selfr    r   V/var/www/html/rh/venv/lib/python3.10/site-packages/django/db/backends/base/features.py__init__  s   
zBaseDatabaseFeatures.__init__c                 C   s   | j jjduS )z5Does this backend support explaining query execution?N)r   opsexplain_prefix)r   r   r   r   #supports_explaining_query_execution  s   z8BaseDatabaseFeatures.supports_explaining_query_executionc                 C   s   | j  5}|d | j d |d | j   | j d |d | \}|d W d   |dkS 1 s=w   Y  |dkS )	z!Confirm support for transactions.z"CREATE TABLE ROLLBACK_TEST (X INT)Fz(INSERT INTO ROLLBACK_TEST (X) VALUES (8)Tz"SELECT COUNT(X) FROM ROLLBACK_TESTzDROP TABLE ROLLBACK_TESTNr   )r   cursorexecuteset_autocommitrollbackfetchone)r   r#   countr   r   r   supports_transactions  s   
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		z*BaseDatabaseFeatures.supports_transactionsc                 C   s   | j sdS |jjS )NF)allows_group_by_selected_pks_metamanaged)r   modelr   r   r   %allows_group_by_selected_pks_on_model  s   z:BaseDatabaseFeatures.allows_group_by_selected_pks_on_model)__name__
__module____qualname__minimum_database_versiongis_enabledallows_group_by_lobr*   allows_group_by_select_indexempty_fetchmany_valueupdate_can_self_select"delete_can_self_reference_subquery!interprets_empty_strings_as_nulls$supports_nullable_unique_constraints.supports_partially_nullable_unique_constraints*supports_nulls_distinct_unique_constraints&supports_deferrable_unique_constraintscan_use_chunked_readscan_return_columns_from_insert can_return_rows_from_bulk_inserthas_bulk_insertuses_savepointscan_release_savepointsrelated_fields_match_typeallow_sliced_subqueries_with_inhas_select_for_updatehas_select_for_update_nowait!has_select_for_update_skip_lockedhas_select_for_update_ofhas_select_for_no_key_updateselect_for_update_of_column#test_db_allows_multiple_connectionssupports_unspecified_pksupports_forward_referencestruncates_nameshas_real_datatypesupports_subqueries_in_group_by*ignores_unnecessary_order_by_in_subquerieshas_native_uuid_fieldhas_native_duration_fieldsupports_temporal_subtractionsupports_regex_backreferencing!supports_date_lookup_using_stringsupports_timezoneshas_zoneinfo_database-requires_explicit_null_ordering_when_groupingnulls_order_largest supports_order_by_nulls_modifierorder_by_nulls_firstmax_query_paramsallows_auto_pk_0can_defer_constraint_checkssupports_tablespacessupports_sequence_resetcan_introspect_defaultcan_introspect_foreign_keysintrospected_field_typessupports_index_column_ordering!can_introspect_materialized_viewscan_distinct_on_fieldsatomic_transactionscan_rollback_ddl+schema_editor_uses_clientside_param_bindingsupports_combined_alterssupports_foreign_keyscan_create_inline_fkcan_rename_indexindexes_foreign_keys!supports_column_check_constraints supports_table_check_constraints can_introspect_check_constraintssupports_paramstyle_pyformatrequires_literal_defaultssupports_expression_defaults"supports_default_keyword_in_insert'supports_default_keyword_in_bulk_insertconnection_persists_old_columnsr   closed_cursor_error_classhas_case_insensitive_likebare_select_suffiximplied_column_null%supports_select_for_update_with_limitgreatest_least_ignores_nullscan_clone_databasesignores_table_name_casefor_update_after_fromsupports_select_unionsupports_select_intersectionsupports_select_difference%supports_slicing_ordering_in_compound supports_parentheses_in_compound#requires_compound_order_by_subquery supports_aggregate_filter_clausesupports_index_on_text_fieldsupports_over_clause#supports_frame_range_fixed_distancesupports_frame_exclusion4only_supports_unbounded_with_preceding_and_followingsupports_cast_with_precisiontime_cast_precision(create_test_procedure_without_params_sql(create_test_procedure_with_int_param_sqlsupports_callproc_kwargssetsupported_explain_formatssupports_default_in_lead_lagsupports_ignore_conflictssupports_update_conflicts%supports_update_conflicts_with_targetrequires_casted_case_in_updatessupports_partial_indexes%supports_functions_in_partial_indexessupports_covering_indexessupports_expression_indexescollate_as_index_expression*allows_multiple_constraints_on_same_fields&supports_boolean_expr_in_select_clausesupports_comparing_boolean_exprsupports_json_fieldcan_introspect_json_field!supports_primitives_in_json_fieldhas_native_json_fieldhas_json_operatorssupports_json_field_contains-json_key_contains_list_matching_requires_listhas_json_object_functionsupports_collation_on_charfieldsupports_collation_on_textfield%supports_non_deterministic_collationssupports_commentssupports_comments_inline!supports_stored_generated_columns"supports_virtual_generated_columnssupports_logical_xor+prohibits_null_characters_in_text_exceptionsupports_unlimited_charfieldsupports_tuple_lookupstest_collationstest_now_utc_templateinsert_test_table_with_defaultsrounds_to_evendjango_test_expected_failuresdjango_test_skipsr   r   r"   r)   r.   r   r   r   r   r      sJ   

r   N)	django.dbr   django.utils.functionalr   r   r   r   r   r   <module>   s    